TY - JOUR
T1 - On the Complexity Reduction of the Second-Order Volterra Nonlinear Equalizer for IM/DD Systems
AU - Diamantopoulos, Nikolaos Panteleimon
AU - Nishi, Hidetaka
AU - Kobayashi, Wataru
AU - Takeda, Koji
AU - Kakitsuka, Takaaki
AU - Matsuo, Shinji
N1 - Publisher Copyright:
© 1983-2012 IEEE.
PY - 2019/2/15
Y1 - 2019/2/15
N2 - To cope with the various nonlinear signal distortions in intensity-modulation/direct-detection transmission systems, a theoretical analysis on the Volterra nonlinear equalizer (VNLE) is provided, focusing on computational complexity aspects. The analysis yields a simple reduced-complexity scheme for the second-order VNLE (R2-VNLE) based on a performance-complexity tradeoff. An experimental verification is performed with single-sideband 28-GBaud PAM-4 signals, generated by an electroabsorption modulated distributed-feedback laser, over transmission distances of up to 80 km of standard single-mode fiber in the C-band. A comparison of the results for different equalization schemes, including a signal-signal beat interference mitigation technique, shows superior performance for the R2-VNLE.
AB - To cope with the various nonlinear signal distortions in intensity-modulation/direct-detection transmission systems, a theoretical analysis on the Volterra nonlinear equalizer (VNLE) is provided, focusing on computational complexity aspects. The analysis yields a simple reduced-complexity scheme for the second-order VNLE (R2-VNLE) based on a performance-complexity tradeoff. An experimental verification is performed with single-sideband 28-GBaud PAM-4 signals, generated by an electroabsorption modulated distributed-feedback laser, over transmission distances of up to 80 km of standard single-mode fiber in the C-band. A comparison of the results for different equalization schemes, including a signal-signal beat interference mitigation technique, shows superior performance for the R2-VNLE.
KW - Direct detection
KW - PAM-4
KW - Volterra filter
KW - intensity modulation
KW - nonlinear equalization
KW - optical interconnects
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U2 - 10.1109/JLT.2018.2890118
DO - 10.1109/JLT.2018.2890118
M3 - Article
AN - SCOPUS:85062819733
SN - 0733-8724
VL - 37
SP - 1214
EP - 1224
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
IS - 4
M1 - 8594656
ER -